The Energy Charter Treaty and its Protocol on Energy Efficiency and Related Environmental Aspects (ECT) cover energy investments, trade, freedom of energy transit, energy efficiency, and resolution of state-to-state or investor-to-state disputes.The text of the ECT and related documents is reproduced in this publication of the Energy Charter Secretariat. More information on the treaty is available from the website of the Energy Charter Conference, an intergovernmental organisation and governing body for the Energy Charter process established by the ECT and based in Brussels.